Loom shuttle



A. VILLANI LOOM SHUTTLE Filed April 3, 1943 INVENTOR; ANTONIO VILLANIATTORNEY Patented June 13, 1944 LOOM SHUTTLE Antonio Villani, Milford,Mass,

assignor to Draper Corporation, Hopedale, Mass., a corporation of MaineApplication April 3, 1943, Serial No. 481,727

7 Claims.

The present invention relates to loom shuttles and, as illustratedherein relates more particularly to means for preventing unthreading ofsuch shuttles when the shuttles are in use.

Various expedients have heretofore been used in the automaticallythreading loom shuttles for preventing unthreadingof the shuttle. Someof these devices have prevented unthreading of the shuttle but have atthe same time increased the difficulty of threading the shuttle.Furthermore, these thread trapping devices in some instances have beenunsatisfactory since they have presented surfaces which have broken orfrayed the fibres of the filling as the shuttle was being threaded. Thisis objectionable when rayon or other synthetic filling is being usedsince even though the fraying was insufficient to break the filling, itwas sufiicient to produce frayed or projecting fibres over a substantialextent of filling which would detract materially from the appearance ofthe cloth.

It is an object of the present invention to provide means for preventingunthreading of loom shuttles and still permit ready threading thereofwithout danger of fraying or braking the filling. To this end, theshuttle is provided with a trap member located in or close to thelongitudinal thread passage and having a thread engaging surfacearranged to prevent fraying or breaking of the filling thread duringthreading of the shuttle. As illustrated, the thread trap is providedwith a rear end portion which is located in a notch in the back wall ofthe shuttle and an intermediate portion inclined downwardly andforwardly to cause the filling thread to be urged toward and under thepoint of the threading block and a forward end portion terminating underthe point of the threading block.

With the above and other objects and features in view, the inventionwill now be described with particular reference to the accompanyingdrawing in which:

Fig. 1 is a plan view of the right hand end of a shuttle embodying theinvention;

Fig. 2 is a view in end elevation of the threading block;

Fig. 3 is a view in rear elevation of the threading block;

Fig. 4 is a perspective view showing the threading block and trapmember; and

Fig. 5 is a fragmentary perspective view illustrating the relationbetween the trap member and the shuttle body.

The shuttle in which the present invention is embodied comprises a.shuttle body I0 having a cavity I2 formed therein for receiving afilling carrier 14. The right hand end of the shuttle is provided with arecess 16 for receiving a threading block Ill.

The threading block I8 is of usual construction and is provided with alongitudinal thread passage 20 which communicates with a side deliveryeye 22. A vertical wall 24 and a wall 26 define the front and rearwalls, respectively, of the longitudinal thread passage 20. The innerend of the longitudinal thread passage is provided with a pair oftension members 28 between which the filling F is received. The frontwall 26 is provided with an outwardly and rearwardly extending horn 38which terminates in a groove or recess '32 formed in the shuttle bodyIll. The

threading block [8 is also provided with a downwardly extending horn 34beneath which the filling thread F passes to the side delivery eye 22.

The threading block [8 is provided with a trap member 36 formed from afiat sheet of metal, preferably brass. The fiat metal sheet is cut toprovide a supporting portion 38 which is received in a recess 40 formedin the back wall 24 of the threading block. The fiat metal sheet isprovided with an upwardly extending portion 42 and a laterally extendingportion 44. The portion 42 is bent upwardly and rearwardly and its pointfits snugly into a notch 45 formed in the back wall of the recess iii ofthe shuttle. The portion 42 is so bent that it presents a downwardly andforwardly inclined surface to the filling F and thus normally urges thethread away from the back wall of the thread block and forwardly anddownwardly under the horn 30. gaging edges of the portion 42 are soarranged that the filling thread F cannot be trapped between said edgesand the body of the shuttle. The portion 44 extends substantiallyhorizontally in a forward direction and then extends horizontally andtoward the left, as viewed in Fig. 3. The upper edge of the portion 44adjacent to the end portion thereof extends above the lower rear edge 46of the horn 30 and thus forms an effective trap which prevents thefilling thread from lifting upwardly out of the longitudinal threadpassage 20.

With the above trap member, threading of the shuttle is not interferedwith but is facilitated due to the inclination of the thread engagingsurfaces of the trap member 36. The filling thread F during the firstpick after bobbin transfer is threaded under the horn 30 of thethreading block and during the next or return pick the filling threadenters under the depending The thread en of the horn 30 but; completeunthreading of the shuttle is prevented by'the trap member 36. Similarlyif the filling thread F loops as the shuttle is brought to rest at theend of a pick,

such looping will not completely unthread the shuttle since the trapmember 36 will prevent the thread from rising out :ofthethread passage.

claim as new and desire to secure by Letters-Patent of the United Statesis:

1. An automatically threading loom shuttle comprising a shuttle bodyhaving a threading block and a side delivery eye, said threading blockhaving a longitudinal thread passage, a horn forming a lateral extensionof the front wall of said passage, and a member supported by the rearwall of said passage andhaving a thread engaging portion projectingforwardly and downwardly from said rear wall and a second portion havinga free end extending laterally and outwardly from said first portionunder said horn to trap the filling thread as the shuttle is threaded.

2'. An-automatically threading loom shuttle comprising a shuttle bodyhaving a threading block and a side delivery eye, said threading blockhaving a longitudinal thread passage, a horn extending laterally fromthe front wall of said passage, and atrap member supported'by the rearwall of said passage, said trap being formed of metal and bent toprovide a downwardly and forwardly extending intermediate portionprojecting across said passage and a forward end portion extendinglaterally and outwardly under said horn and above the rear lower edge ofsaid horn to form a filling trap.

3. An automatically threading loom shuttle comprising a shuttle bodyhaving a threading block and a side delivery eye, said threading blockhaving a longitudinal thread passage, a horn extending laterally fromthe front wall of said passage, said horn having a depending tip at itslower rear. edge, and a member comprising a filling engaging portionfixed to the rear wall of the threading block and bent forwardly anddownwardly across said passage, and a second portion connected to saidfirst portion and extendinghorizontally and outwardly under said hornand having a free outer end part extending Having thus described myinvention what 1 l block and extending forwardly and downwardly acrossthe longitudinal thread passage and a secend portion connected to thefirst portion and extending at substantially right angles thereto alongsaid passage and under said horn and having an end part extended abovethe lower rear edge of said born to form a filling trap.

5. An automatically threading loom shuttle comprising a shuttle bodyhaving a threading block and a side delivery eye, said threading blockhaving a longitudinal thread passage, a horn extending laterally of thefront wall-of said passage, and a member comprising a filling engagingportion projecting forwardly and downwardly across the thread passage, arearwardly directed portion filling in a notch in said shuttle body, anda second portion forming an extension of the first mentioned portion andextending outwardly along said passage and under said horn to trap thefilling.

6. A threading block for use in automatically threading loom shuttles,having in combination, front and rear walls forming between them alongitudinal thread passage, a horn formed as an outward extension ofsaid front wall, and a member fixed to said rear .wall and having acurved thread guiding surface projecting downwardly and forwardly acrosssaid thread passage and an end portion extending outwardly along saidpassage and under said horn to form a thread trap. I

7. A threading block for use in automatically threading loom shuttleshaving in combination front and rear walls forming between them alongitudinal thread passage, a horn formed as an outward extension ofthe front wall of said passage, and a member formed of sheet metal fixedto said rear wall and having a rearward portion extending into a notchformed in a said horn to form a thread ANTONIO VILLANI.

